2001ode
OK with Tabetha.
2 strategy are apply by ECU : cold engine and very hot engine.
With cold engine, and contact on, fuel pump start just during 1 or 2 seconds, just to obtain suffisant fuel pressure in the rail. And it restart as soon as engine crank is in suffisant speed.
With very hot engine, and contact on, fuel pump start during 10 seconds, to obtain a big flow on fuel rail to avoid vapor lock.
You can easely check this with disconnecting WTS and shunt connector directly on (use cutting paper clip). This shunt is , for ECU, same than very hot engine.
(resistor = 0)
Regards.
Claude
This seems to make sense and I will try what you suggest.
Alvyn No It idles very smooth I run a grp a coil so no need for ultra small plug gaps which is what I found to cause rough idle on mine.